Packing-ring.



L. B. McQUAY & W. K. NORRIS. PACKING RING.

APPLICATION FILED MAY 1,1913.

1,071,647, Patented Augz26, 191s.

Fig.1 F1 .5. L J a awuemkoc as? I 7 UNITED STATES PATENT ora ion,

LOUIS E. MGQUAY, F WEBSTER GROVES, MISSQURI, AND WILLIAM K. NORRIS, OF EAST ST. LOUIS, ILLINOIS.

PACKING-RING.

Specification of Letters Patent.

Patented Aug. 26,1913.

Application filed May 1, 1913. Serial l t ov 764.,770.

To all whom it may concern: 7

Be it known that we, LOUIS E. MCQUAY and lViLLIAM K. Nomus, citizens of the United States, said MCQUAY residing, at lVebster Groves, St. Louis county, Missouri, and said Noluus residing at East St. Lotus, St. Clair county, Illinois, have invented certain new and useful Improvements in Packing-Rings, of which the following is a specification.

This invention relates to engines or do vices of every kind in which a metal pistonhead packing ring is used. and the objects attained by it are, first, to provide an absolutely unleakahle packing: rinq; second, to provide such a ring with a minimum of material and cost; third to ramstrnet the ring in the simplest. manner, there being only two parts employed; fourth, to make a ring which will be equally eti'eetive when used on the pistons", or piston heads of steam engines, steam pumps, air pumps or compressors, ammonia pumps or compressors, automobile, motorcycle, aeroplane or other engines depending on the energy of steam, gas, gasoleue, oil or other sueh ageneies for power.

Further objects of this invention are to provide a packing ring in which the bands -\vill have, approximately, equal tension, and also in which the wear of the rings in the cylinder, will he uniformly distributed.

The device is fully illustrated in the aceornpanvin; drawing. in whieh-- Figure 1. shows a. side elevation of an en- Qine. piston head equipped with several of the packing rings. in operative position. Fig. :2 is an enlarged side view with a portion of lhe outer hand hrol(=-n away, to sh w theeonstruetion behind it. Fig. 3 is a vertical section taken on the line. 3--3 of Fig. 2. and Fig. -i. is a fare view. on the scale of Fig. I). 'showing a part of the exterior of a completed ring and under compression,

'lhe. Various features of the device are re.- i'erred to by numerals. like numerals dent). ing eorrespomling parts in the several viewa 'lhe numeral 0, designates thipiston ot' a gas engine, provided with oar packing rings 8, which appear in edge view. These rings are/imade in two members, or hands, each of which has an opening or split, 15, or 1!), across it. These rings are expansible and resilient and are, seated in the grooves in the piston head, by spreading them suit 56 eiently to he slipped over the end of the head piston head and-moved along to the grooves into which they spring, when released. Their expanding quality keeps their outer surfaeesin sliding contact with the walls of the cylinder.

The inner band ll, of the device is of the full width of the ring and has an annular flange. l6, projecting radially from the body of the ring; at one of its edges. The outer hand 18, of the ring is disposed in the angle formed the body of the inner band and the flange 16. and is flush with the flange on its peripheral surface and with the edge of the inner band, on its side. The split 15, in the hand H, aml the split; 19 in the band 18, are made in any preferred form, the inclined openings shown in the drawings being perhaps the best. These splits are positioned at any chosen part of the bands. The 7 function of these splits is to render the bands compressible and expansible, particularly the latter, to insure their pressure against the interior walls of the. cylinder.

it, is important that the bands 14 and 18, should be equal to each ,other in tension, or as nearly equal as possible, the outer band being substantially three fourths of the width of the inner band. and the flange 16, ot' the inner hand being substantially one Fourth of the width of the inner band, so that when placed together the combined width of the flange 16, and band 18, is equal to the total width of the whole ring.

In order to prevent any sliding of the hands, one upon the other, a radially outstanding peg 20, is provided on the body of the inner hand. in lateralrtaintact with its tlange. of equal. or less height than said flange, and adapted to engage a notch 21, at; one, or both inner corners of the split so as to engage the peg at, either corner, and so prevent any considerable rotation of the hands upon each other.

Having now described the invention and 'the manner of using it, what we claim and desire to secure, is,-

1. A packing ring comprising an inner resilientsplit. band. an annular radial flange *"im an outer edge of said hand, an outer reband and the flange on the inner one of said bands being substantially one fourth of the width of the inner band, as herein set forth.

2. A packing r1ng comprising an inner band, a radial flange thereon, an

band, an opening through said outer band, the inner edge of said outer band at its opening, having a notch to engage said peg ,the

outer one of bands being substantiall three fourths of the width of the inner bang, l5

and the flange of the inner one of said bends being substantially one fourth of the width of the inner band. 7 1 I In testimony whereof we aflix our signatures in presence of two witnesses.

LOUIS E. McQUAY. WILLIAM KQ NORRIS.

Witnesses:

E. H. HILL, PAUL it. DOLVIN. 

